WO2024017159A1 - 随机接入方法及装置、计算机可读存储介质 - Google Patents

随机接入方法及装置、计算机可读存储介质 Download PDF

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Publication number
WO2024017159A1
WO2024017159A1 PCT/CN2023/107429 CN2023107429W WO2024017159A1 WO 2024017159 A1 WO2024017159 A1 WO 2024017159A1 CN 2023107429 W CN2023107429 W CN 2023107429W WO 2024017159 A1 WO2024017159 A1 WO 2024017159A1
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WIPO (PCT)
Prior art keywords
random access
network device
anchor
indication information
anchor network
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PCT/CN2023/107429
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English (en)
French (fr)
Inventor
雷珍珠
周化雨
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展讯半导体(南京)有限公司
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Publication of WO2024017159A1 publication Critical patent/WO2024017159A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present invention relates to the field of wireless communication technology, and in particular, to a random access method and device, and a computer-readable storage medium.
  • the energy consumption of network equipment mainly includes two parts: static power consumption and dynamic power consumption.
  • Static power consumption mainly includes static reception power consumption and static transmission power consumption.
  • Static reception power consumption mainly includes the network receiving the random access request message (Msg1) on the configured random access resources.
  • Static transmission power consumption mainly includes the transmission of synchronization signal blocks. , sending paging messages, sending system information, etc.
  • the embodiments of the present invention solve the technical problem of high static energy consumption of network equipment.
  • embodiments of the present invention provide a random access method, which is applied to a terminal device, including: when it is detected that a trigger condition is met or a trigger indication is received, sending indication information to a non-anchor network device; the indication The information is used to instruct the non-anchor network device to initiate physical random access channel reception; and send a random access request message to the non-anchor network device.
  • sending the indication information to the non-anchor network device includes: sending a first random access preamble to the non-anchor network device, where the first random access preamble carries the indication information.
  • sending the first random access preamble to the non-anchor network device includes: using the first random access opportunity configured on the non-anchor carrier to send the first random access preamble to the non-anchor network device.
  • the first random access opportunity is any random access opportunity used to send a random access request message.
  • the method before sending the first random access preamble to the non-anchor network device, the method further includes: obtaining a system message sent by the anchor network device; and obtaining the first random access preamble from the system message. Access preamble configuration information.
  • the configuration information of the first random access preamble includes: an index range of the first random access preamble; or a set of index numbers of the first random access preamble.
  • the configuration information of the first random access preamble includes: an index range of the first random access preamble; or, a set of index numbers of the first random access preamble.
  • obtaining the system message sent by the anchor network device includes: receiving the system message sent by the anchor network device on the anchor carrier.
  • sending the indication information to the non-anchor network device includes: using periodic uplink resources to send the indication information to the non-anchor network device; the periodic uplink resources are provided by the anchor network device.
  • Non-anchor carrier configuration is
  • the method before sending the indication information to the non-anchor network device using periodic uplink resources, the method further includes: obtaining the system message sent by the anchor network device; The configuration information of the periodic uplink resources is obtained from the system message.
  • the configuration information of the periodic uplink resources is the configuration information of a second random access opportunity.
  • the second random access opportunity is used to send the indication information.
  • the second random access opportunity is part of The random access opportunity used to send the random access request message.
  • using periodic uplink resources to send the indication information to the non-anchor network device includes: using the second random access opportunity to send a second random access preamble, and the indication information carried on the second random access preamble, and the second random access preamble is any random access preamble.
  • the triggering condition includes: N consecutive random access failures on the anchor carrier.
  • receiving the trigger indication includes: acquiring the trigger indication by receiving paging downlink control information; or acquiring the trigger indication by receiving paging advance indication; or acquiring the trigger indication by receiving paging messages. trigger indication.
  • sending a random access request message to the non-anchor network device includes: sending the random access request message using a random access resource used for sending a random access request message.
  • sending the random access request message includes: delaying sending the random access request message for X time units after sending the indication information to the non-anchor network device.
  • the embodiment of the present invention also provides another random access method, which is applied to non-anchor network equipment, including: receiving indication information, initiating physical random access channel reception; and receiving a random access request message.
  • the receiving the indication information and initiating the physical random access channel reception includes: receiving the first random access preamble and initiating the physical random access channel reception; the first random access preamble carries the instructions.
  • the first random access preamble is configured by the terminal device on the non-anchor carrier.
  • the first random access opportunity is sent at a configured first random access opportunity, and the first random access opportunity is any random access opportunity used to send a random access request message.
  • receiving the indication information and initiating physical random access channel reception includes: receiving the indication information on periodic uplink resources configured by the anchor network device for the non-anchor carrier. .
  • the indication information includes: a random access preamble.
  • receiving the random access request includes: receiving the random access request message on a random access resource used to receive the random access request message.
  • Embodiments of the present invention also provide a random access device, applied to terminal equipment, including: a first sending unit, configured to send indication information to a non-anchor network device when it detects that a trigger condition is met or a trigger indication is received; The instruction information is used to instruct the non-anchor network device to initiate physical random access channel reception; the second sending unit is used to send a random access request message to the non-anchor network device.
  • An embodiment of the present invention also provides another random access device, applied to non-anchor network equipment, including: a first receiving unit, used to receive indication information and start physical random access channel reception; a second receiving unit, Used to receive random access request messages.
  • Embodiments of the present invention also provide a computer-readable storage medium.
  • the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, and a computer program is stored thereon.
  • the computer program is processed by a processor. The steps of any of the above random access methods are executed during runtime.
  • An embodiment of the present invention also provides another random access device, including a memory and a processor.
  • the memory stores a computer program that can be run on the processor.
  • the processor runs the computer program, it executes The steps of any of the above random access methods.
  • the terminal device When the terminal device detects that the trigger condition is met or receives a trigger indication, the terminal device sends a message to the non-anchor point.
  • the network device sends instructions. After receiving the indication information, the non-anchor network device starts physical random access channel reception. Afterwards, the terminal device sends a random access request message to the non-anchor network device to access the non-anchor network device. Since the non-anchor network device starts physical random access channel reception after receiving the trigger information, the power consumption of the non-anchor network device can be effectively reduced.
  • Figure 1 is a flow chart of a random access method in an embodiment of the present invention
  • Figure 2 is a schematic diagram of an existing communication scenario
  • Figure 3 is a flow chart of another random access method in an embodiment of the present invention.
  • Figure 4 is a schematic structural diagram of a random access device in an embodiment of the present invention.
  • Figure 5 is a schematic structural diagram of another random access device in an embodiment of the present invention.
  • Network energy saving is an issue of great concern to mobile operators and equipment manufacturers.
  • Network energy saving is very beneficial to reducing operating costs and environmental protection.
  • the carriers corresponding to some frequency bands (such as 4GHz, 6GHz or 26GHz, etc.) ) or cells can be turned off as much as possible and turned on as needed to achieve network energy saving.
  • network energy saving can be achieved by switching certain carriers on and off, but this can only be achieved when the network load is low.
  • a carrier or cell that can be turned on on demand may be called a non-anchor carrier (non-anchor carrier) or a non-anchor cell (non-anchor cell).
  • a carrier or cell that is not closed may be called an anchor carrier or anchor cell. (non-anchor cell).
  • non-anchor cells are deployed within the coverage area of the anchor cell.
  • the anchor carrier provides a wide range of coverage, while the non-anchor carrier has a smaller coverage area and provides high-speed data transmission services.
  • the non-anchor carrier is controlled by the network. , which can be opened on demand, as shown in Figure 2 below. Referring to Figure 2, a schematic diagram of an existing communication scenario is given. In Figure 2, there are multiple non-anchor cells within the coverage area of the anchor cell.
  • the terminal device when detecting that the trigger condition is met or receiving a trigger indication, the terminal device sends indication information to the non-anchor network device. After receiving the indication information, the non-anchor network device starts physical random access channel reception. Afterwards, the terminal device sends a random access request message to the non-anchor network device to access the non-anchor network device. Since the non-anchor network device starts physical random access channel reception after receiving the indication information, the power consumption of the non-anchor network device can be effectively reduced.
  • the terminal device in the embodiment of the present invention is a device with wireless communication functions, which can be called a terminal (terminal), user equipment (UE), mobile station (MS), mobile terminal (MT) ), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc.
  • Terminal equipment can be fixed or mobile.
  • the terminal device may support at least one wireless communication technology, such as LTE, new radio (new radio, NR), etc.
  • the terminal device may be a mobile phone, Tablet computers (pads), desktop computers, notebook computers, all-in-one computers, vehicle-mounted terminals, virtual reality (VR) terminal equipment, augmented reality (AR) terminal equipment, wireless terminals in industrial control (industrial control) , wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety, smart cities ( Wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, Personal digital assistant (PDA), handheld device with wireless communication function, computing device or other processing device connected to a wireless modem, wearable device, terminal device in future mobile communication network or future evolved public mobile land Terminal equipment in the network (public land mobile network, PLMN), etc.
  • the terminal device may also be a device with transceiver functions, such as a chip system.
  • the chip system may include chips and may also include other discrete devices
  • the network device is a device that provides wireless communication functions for terminals, and may also be called a radio access network (radio access network, RAN) device, an access network element, etc.
  • the network device can support at least one wireless communication technology, such as LTE, NR, etc.
  • network equipment includes but is not limited to: next-generation base station (generation nodeB, gNB), evolved node B (evolved node B, eNB), and wireless network control in the fifth-generation mobile communication system (5th-generation, 5G).
  • the network device may also be a wireless controller, a centralized unit (CU), and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device may For relay stations, access points, vehicle-mounted equipment, terminal equipment, wearable devices and access network equipment in future mobile communications or or access network equipment in future evolved PLMNs.
  • the network device may also be a device with a wireless communication function for the terminal device, such as a chip system.
  • the chip system may include a chip, and may also include other discrete devices.
  • the access network device can also communicate with an Internet Protocol (Internet Protocol, IP) network, such as the Internet, a private IP network, or other data networks.
  • IP Internet Protocol
  • An embodiment of the present invention provides a random access method. Referring to Figure 1, detailed description will be given below through specific steps.
  • the random access method corresponding to the following steps 101 to 102 can be executed by a chip with data processing capabilities in the terminal device, or by a chip module in the terminal device including the above-mentioned chip with data processing capabilities. executed by the group.
  • the following introduction takes the terminal device as the execution subject as an example.
  • Step 101 When it is detected that the trigger condition is met or a trigger instruction is received, instruction information is sent to the non-anchor network device.
  • the indication information may be used to instruct the non-anchor network device to initiate physical random access channel (Physical Random Access Channel, PRACH) reception.
  • Physical Random Access Channel Physical Random Access Channel
  • the non-anchor network device may be a network device corresponding to a non-anchor cell or a non-anchor carrier
  • the anchor network device may be a network device corresponding to an anchor cell or anchor carrier.
  • anchor carriers or anchor cells can provide wide-area coverage
  • non-anchor carriers or non-anchor cells can provide high-speed data transmission.
  • the coverage area of non-anchor carriers or non-anchor cells is usually smaller than that of non-anchor carriers. Coverage of point carriers or non-anchor cells.
  • the coverage area of the non-anchor carrier or non-anchor cell may be within the coverage area of the anchor carrier or anchor cell.
  • the terminal device satisfying the triggering condition may mean that the terminal device fails random access on the anchor carrier for N consecutive times, N ⁇ 2. That is to say, when the terminal device fails to randomly access the anchor point carrier multiple times in a row, it can be determined that the terminal device meets the triggering conditions. After detecting that the trigger conditions are met, the terminal device can report to the non-anchor network device Send instructions.
  • the trigger indication may be used to instruct the terminal device to send indication information to the non-anchor network device.
  • the trigger indication can also be used to instruct the terminal device to perform random access through non-anchor carriers.
  • the trigger indication may be carried in a paging message.
  • the terminal device receives the paging message carrying the trigger indication on the anchor carrier, it can determine that the trigger indication has been received. After receiving the trigger indication, the terminal device can also send indication information to the non-anchor network device.
  • the trigger indication can also be carried in paging downlink control information (Paging DCI).
  • Paging DCI paging downlink control information
  • the terminal device receives the Paging DCI on the anchor carrier and obtains the trigger indication from the Paging DCI.
  • a dedicated bit field can be set, and the trigger indication is represented by the value of the dedicated bit field.
  • the length of the dedicated bit field can be 1 bit.
  • the terminal device receives the Paging DCI and detects that the value of the dedicated bit field in the Paging DCI is 1, it is determined that the trigger indication has been received.
  • the trigger indication may also be carried in the paging advance indication (Paging message).
  • the terminal device receives the paging massage on the anchor point carrier and obtains the trigger indication from the paging massage.
  • a dedicated bit field can be set, and the trigger indication is represented by the value of the dedicated bit field.
  • the length of the dedicated bit field can be 1 bit.
  • the terminal device receives the Paging message and detects that the value of the dedicated bit field in the Paging message is 1, it is determined that the trigger indication has been received.
  • the length of the dedicated bit field in Paging DCI or Paging massage can also be 2 bits or more bits. Setting the length of the dedicated bit field to 1 bit can save downlink overhead and improve resource utilization efficiency.
  • the value of the dedicated bit field that represents the presence of a trigger indication can also be other values. value. For example, if the length of the dedicated bit field is 1 bit, then the value of the dedicated bit field can also be set to 0, indicating that there is a trigger indication.
  • the indication information sent by the terminal device to the non-anchor network device may be carried by the first random access preamble (preamble).
  • the indication information sent by the terminal device to the non-anchor network device may be characterized by the first random access preamble.
  • the number of first random access preambles may be one or more.
  • the terminal device may use the first random access opportunity (RO) configured on the non-anchor carrier to send the first random access preamble to the non-anchor network device.
  • RO random access opportunity
  • the first random access opportunity may be any random access opportunity used to send a random access request message. That is to say, any random access opportunity used to send a random access request message may be used as the first random access opportunity to carry indication information and be sent to the non-anchor network device.
  • the random access preamble can be used for random access.
  • the above-mentioned first random access preamble carries indication information, which may be used only to instruct the non-anchor network device to start PRACH.
  • the anchor network device may configure one or more first random access preambles for the terminal device.
  • the anchor network device may send a system message to the terminal device, and the system message carries configuration information of the configured first random access preamble.
  • the anchor network device can send system messages to the terminal device on the anchor carrier.
  • the terminal device may receive a system message sent by the anchor network device on the anchor carrier, and obtain configuration information of one or more first random access preambles configured by the anchor network device.
  • the configuration information of the first random access preamble may include the index address range of the first random access preamble; or, the configuration information of the first random access preamble may be The information may include a set of index numbers of the first random access preamble.
  • the configuration information of the first random access preamble can essentially be used to indicate which random access preambles are the first random access preambles.
  • the random access preamble 1 and the random access preamble 2 are determined to be the first random access preamble.
  • the anchor network device may select the first random access preamble from the contention random access preamble subset, or may select the first random access preamble from the non-contention random access preamble subset.
  • the anchor network device can randomly select the first random access preamble from the contention random access preamble subset or the non-contention random access preamble subset, or it can also select the first random access preamble code from the contention random access preamble subset according to the preset selection rules. Or select the first random access preamble from a subset of non-contention random access preambles.
  • the anchor network device randomly selects two random access preambles from the competition random access preamble subset, namely random access preamble 1 and random access preamble 3. Then random access preamble 1 and random access preamble 3 are randomly selected.
  • Access preamble 3 is the above-mentioned first random access preamble.
  • the anchor network device selects two random access preambles from the non-contention random access preamble subset according to preset rules, namely random access preamble 2 and random access preamble 4, then the random access preamble is randomly accessed.
  • the input preamble 2 and the random access preamble 4 are the above-mentioned first random access preamble.
  • the terminal device may also send indication information to the non-anchor network device on periodic uplink resources.
  • the anchor network device can configure the configuration information of the periodic uplink resources on the non-anchor carrier for the terminal device, and send the configuration information of the periodic uplink resources on the non-anchor carrier to the terminal device through the system message.
  • the anchor network device can send system messages to the terminal device on the anchor carrier.
  • the terminal device receives the system message on the anchor carrier, thereby obtaining the configuration information of the periodic uplink resources on the non-anchor carrier, and then determines the periodic uplink resources.
  • the periodic uplink resources on the non-anchor carrier may include the second random access opportunity.
  • the configuration information of the periodic uplink resources is the configuration information of the second random access opportunity.
  • the second random access opportunity is used to send indication information, and the second random access opportunity is part of the random access opportunity used to send a random access request message.
  • the first random access opportunity may be any random access opportunity used to send a random access request message
  • the second random access opportunity may be part of a random access opportunity used to send a random access request message.
  • the indication information may be carried in the second random access preamble, and the second random access preamble may be any random access preamble used for the random access request, or may be carried in other types of sequences. .
  • the configuration information of the RO may include the period of the RO, the number of ROs in the time domain within a PRACH cycle, and the number of ROs multiplexed in the frequency (msg1 -FDM), and RO-associated synchronization signal block (ssb-perRACH-occasion), etc.
  • the terminal device When the terminal device detects that the trigger condition is met or receives a trigger indication, the terminal device may use the second random access opportunity to send indication information to the non-anchor network device. After receiving the second random access preamble carried by the second random access opportunity, the non-anchor network device starts RACH reception.
  • the indication information may be carried by the first random access preamble.
  • the non-anchor network device receives the first random access preamble, it starts RACH reception.
  • the indication information may also be carried by the second random access preamble sent on the second random access opportunity.
  • the non-anchor network device receives the second random access preamble sent on the second random access opportunity, it starts RACH reception.
  • Step 102 Send a random access request message to the non-anchor network device.
  • the terminal device uses the non-anchor carrier to transmit to the non-anchor network device.
  • the random access resource configured on the non-anchor carrier for sending the random access request message can be used to send the random access request message (ie, Msg1).
  • the random access resource used to send the random access request message may include a random access preamble used to send the random access request and a random access opportunity.
  • the random access preamble used to send the random access request message may be different from the above-mentioned first access preamble; the random access opportunity used to send the random access request may be different from the above-mentioned second random access The timing is different.
  • the terminal device after the terminal device uses the non-anchor carrier to send the indication information to the non-anchor network device, it can also delay X time units, and then use the non-anchor carrier configured to send the random access request.
  • the RO of the message sends Msg1.
  • the unit of time unit can be symbol, time slot, ms, etc.
  • the value of X can be configured by the network or preset for the protocol.
  • the non-anchor network device starts PRACH reception after receiving the indication information. It may take a period of time for the non-anchor network device to start RRACH reception, during which the non-anchor network device will not receive the random access request message sent by the terminal device. If the terminal device sends a random access request message immediately after sending the instruction information, the random access request message sent by the terminal device will not be received by the non-anchor network device, resulting in a waste of power consumption.
  • the non-anchor network device can receive the random access request message sent by the terminal device and avoids waste of power consumption of the terminal device.
  • the terminal device when it is detected that the trigger condition is met or a trigger indication is received, the terminal device sends indication information to the non-anchor network device. After receiving the indication information, the non-anchor network device starts physical random access channel reception. Afterwards, the terminal device sends a random access request message to the non-anchor network device to access the non-anchor network device.
  • the random access method corresponding to the following steps 301 to 302 can be executed by a chip with data processing capabilities in the non-anchor network device, or by the non-anchor network device including the above-mentioned data processing capabilities.
  • the capabilities of the chip are implemented by the chip module.
  • the following introduction takes a non-anchor network device as the execution subject as an example.
  • Step 301 After receiving the instruction information, start physical random access channel reception.
  • the terminal device when the terminal device detects that the trigger condition is met or receives a trigger indication, the terminal device may send indication information to the non-anchor network device.
  • the terminal device satisfying the triggering condition may mean that the terminal device fails random access on the anchor carrier for N consecutive times, N ⁇ 2. That is to say, when the terminal device fails to randomly access the anchor point carrier multiple times in a row, it can be determined that the terminal device meets the triggering conditions. After detecting that the triggering conditions are met, the terminal device can send indication information to the non-anchor network device.
  • the trigger indication may be used to instruct the terminal device to send indication information to the non-anchor network device.
  • the trigger indication can also be used to instruct the terminal device to perform random access through non-anchor carriers.
  • the trigger indication may be carried in a paging message.
  • the terminal device receives the paging message carrying the trigger indication on the anchor carrier, it can determine that the trigger indication has been received. After receiving the trigger indication, the terminal device can also send indication information to the non-anchor network device.
  • the trigger indication can also be carried in paging downlink control information (Paging DCI).
  • Paging DCI paging downlink control information
  • the terminal device receives the Paging DCI on the anchor carrier and obtains the trigger indication from the Paging DCI.
  • a dedicated bit field can be set, and the trigger indication is represented by the value of the dedicated bit field.
  • the length of the dedicated bit field can be 1 bit.
  • the terminal device receives Paging DCI and detects Paging DCI If the value of the bit field is 1, it is determined that the trigger indication has been received.
  • the trigger indication may also be carried in the paging advance indication (Paging message).
  • the terminal device receives the paging massage on the anchor point carrier and obtains the trigger indication from the paging massage.
  • a dedicated bit field can be set, and the trigger indication is represented by the value of the dedicated bit field.
  • the length of the dedicated bit field can be 1 bit.
  • the terminal device receives the Paging message and detects that the value of the dedicated bit field in the Paging message is 1, it is determined that the trigger indication has been received.
  • the indication information sent by the terminal device to the non-anchor network device may be carried by the first random access preamble (preamble).
  • the indication information sent by the terminal device to the non-anchor network may be characterized by the first random access preamble.
  • the number of first random access preambles may be one or more.
  • the terminal device may use the first random access opportunity configured on the non-anchor carrier to send the first random access preamble to the non-anchor network device.
  • the first random access opportunity may be any random access opportunity used to send a random access request message. That is to say, any random access opportunity used to send a random access request message may be used as the first random access opportunity to carry indication information and be sent to the non-anchor network device.
  • the anchor network device may configure one or more configuration information of the first random access preamble for the terminal device.
  • the anchor network device may send a system message to the terminal device, and the system message carries configuration information of the configured first random access preamble.
  • the anchor network device can send system messages to the terminal device on the anchor carrier.
  • the terminal device may receive the system message sent by the anchor network device on the anchor carrier, and obtain one or more first random access preambles configured by the anchor network device. Configuration information.
  • the configuration information of the first random access preamble may include the index address range of the first random access preamble; or, the configuration information of the first random access preamble may include the first random access preamble A collection of index numbers.
  • the configuration information of the first random access preamble can essentially be used to indicate which random access preambles are the first random access preambles.
  • the random access preamble 1 and the random access preamble 2 are determined to be the first random access preamble.
  • the anchor network device may select the first random access preamble from the contention random access preamble subset, or may select the first random access preamble from the non-contention random access preamble subset.
  • the anchor network device can randomly select the first random access preamble from the contention random access preamble subset or the non-contention random access preamble subset, or it can also select the first random access preamble code from the contention random access preamble subset according to the preset selection rules. Or select the first random access preamble from a subset of non-contention random access preambles.
  • the anchor network device randomly selects two random access preambles from the competition random access preamble subset, namely random access preamble 1 and random access preamble 3. Then random access preamble 1 and random access preamble 3 are randomly selected.
  • Access preamble 3 is the above-mentioned first random access preamble.
  • the anchor network device selects two random access preambles from the non-contention random access preamble subset according to preset rules, namely random access preamble 2 and random access preamble 4, then the random access preamble is randomly accessed.
  • the input preamble 2 and the random access preamble 4 are the above-mentioned first random access preamble.
  • the terminal device may also send indication information to the non-anchor network device on periodic uplink resources.
  • the anchor network device can configure the configuration information of the periodic uplink resources on the non-anchor carrier for the terminal device, and send the configuration information of the periodic uplink resources on the non-anchor carrier to the terminal device through the system message.
  • Anchor network devices can be On the carrier, send system messages to the terminal device. The terminal device receives the system message on the anchor carrier, thereby obtaining the configuration information of the periodic uplink resources on the non-anchor carrier, and then determines the periodic uplink resources.
  • the periodic uplink resources on the non-anchor carrier may include the second random access opportunity.
  • the configuration information of the periodic uplink resources is the configuration information of the second RO.
  • the second random access opportunity is used to send indication information, and the second random access opportunity is part of the random access opportunity used to send a random access request message.
  • the first random access opportunity may be any random access opportunity used to send a random access request message
  • the second random access opportunity may be part of a random access opportunity used to send a random access request message.
  • the indication information may be carried in the second random access preamble, and the second random access preamble may be any random access preamble used for the random access request, or may be carried in other types of sequences. .
  • the configuration information of the RO may include the period of the RO, the number of ROs in the time domain within a PRACH cycle, and the number of ROs multiplexed in the frequency (msg1 -FDM), and RO-associated synchronization signal block (ssb-perRACH-occasion), etc.
  • the terminal device When the terminal device detects that the trigger condition is met or receives a trigger indication, the terminal device may use the second random access opportunity to send indication information to the non-anchor network device. After receiving the second random access preamble carried by the second random access opportunity, the non-anchor network device can start PRACH reception.
  • the indication information is essentially represented by the second random access opportunity.
  • the second access opportunities are RO1 and RO2. If the non-anchor network device detects that the access opportunities for transmitting the random access preamble include RO1 and RO2, it determines that the indication information is received and starts PRACH reception.
  • the terminal device reports the random access preamble in RO1 and RO2, it means that the terminal device has sent indication information to the non-anchor network device.
  • Step 302 Receive a random access request message.
  • the terminal device uses the non-anchor carrier to send the indication information to the non-anchor network device, it can use the random access resource configured on the non-anchor carrier for sending the random access request message to send the random access request message. Enter the request message (i.e. Msg1).
  • the random access resource used to send the random access request message may include a random access preamble used to send the random access request and a random access opportunity.
  • the random access preamble used to send the random access request message may be different from the above-mentioned first access preamble; the random access opportunity used to send the random access request may be different from the above-mentioned second random access The timing is different.
  • the terminal device after the terminal device uses the non-anchor carrier to send the indication information to the non-anchor network device, it can also delay X time units, and then use the non-anchor carrier configured to send the random access request.
  • the RO of the message sends Msg1.
  • the unit of time unit can be symbol, time slot, ms, etc.
  • the value of X can be configured by the network or preset for the protocol.
  • the non-anchor network device starts PRACH reception after receiving the indication information. It may take a period of time for the non-anchor network device to start RRACH reception, during which the non-anchor network device will not receive the random access request message sent by the terminal device. If the terminal device sends a random access request message immediately after sending the instruction information, the random access request message sent by the terminal device will not be received by the network device, resulting in a waste of power consumption.
  • sending the random access request message is delayed by X time units to ensure that the non-anchor network device can receive the random access request message sent by the terminal device, thereby avoiding waste of power consumption of the terminal device.
  • a random access device 40 in an embodiment of the present invention including: a first sending unit 401 and a second sending unit 402, wherein:
  • the first sending unit 401 is configured to send indication information to a non-anchor network device when it detects that a trigger condition is met or a trigger indication is received; the indication information is used to instruct the non-anchor network device to activate a physical random access channel. take over;
  • the second sending unit 402 is configured to send a random access request message to the non-anchor network device.
  • the specific execution process of the above-mentioned first sending unit 401 and the second sending unit 402 may refer to steps 101 to 102, which will not be described again here.
  • the above-mentioned random access device 40 may correspond to a chip with a data processing function in the terminal device; or correspond to a chip module including a chip with a data processing function in the terminal device; or correspond to the terminal device.
  • FIG. 5 another random access device 50 in an embodiment of the present invention is shown, including: a first receiving unit 501 and a second receiving unit 502, wherein:
  • the first receiving unit 501 is configured to receive indication information and start physical random access channel reception
  • the second receiving unit 502 is configured to receive a random access request message.
  • the specific execution processes of the above-mentioned first receiving unit 501 and the second receiving unit 502 may refer to steps 301 to 302, which will not be described again here.
  • the above-mentioned random access device 50 may correspond to a chip with a data processing function in a network device; or correspond to a chip module including a chip with a data processing function in a network device; or correspond to a network device.
  • each module/unit included in each device and product described in the above embodiments may be a software module/unit or a hardware module/unit, or it may be partly a software module/unit and partly is a hardware module/unit.
  • each module/unit included therein can be implemented in the form of hardware such as circuits, or at least some of the modules/units can be implemented in the form of a software program.
  • the software program Runs inside the chip
  • the remaining (if any) modules/units can be implemented using circuits and other hardware methods; for various devices and products applied to or integrated into chip modules, each module/unit included in them can all be implemented using circuits, etc.
  • modules/units can be located in the same component of the chip module (such as chips, circuit modules, etc.) or in different components, or at least some modules/units can be implemented in the form of software programs, which run For the processor integrated inside the chip module, the remaining (if any) modules/units can be implemented in hardware such as circuits; for each device or product applied to or integrated into the terminal, each module/unit included in it can be It is implemented in the form of hardware such as circuits. Different modules/units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal. Alternatively, at least some modules/units can be implemented in the form of software programs. The software The program runs on the processor integrated inside the terminal, and the remaining (if any) modules/units can be implemented using circuits and other hardware methods.
  • Embodiments of the present invention also provide a computer-readable storage medium.
  • the computer-readable storage medium is a non-volatile storage medium or a non-transitory storage medium, and a computer program is stored thereon.
  • the computer program is processed by a processor. During runtime, the steps of the random access method provided in steps 101 to 102 are executed, or the steps of the random access method provided in steps 301 to 302 are executed.
  • An embodiment of the present invention also provides a random access device, including a memory and a processor.
  • the memory stores a computer program that can be run on the processor.
  • the processor executes steps when running the computer program. Steps of the random access method provided in steps 101 to 102, or steps of the random access method provided in steps 301 to 302.
  • the program can be stored in a computer-readable storage medium.
  • the storage medium can include: ROM, RAM, magnetic disk or CD, etc.

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Abstract

一种随机接入方法及装置、计算机可读存储介质，所述随机接入方法包括：检测到满足触发条件或者接收到触发指示时，向非锚点网络设备发送指示信息；所述指示信息用于指示所述非锚点网络设备启动物理随机接入信道接收；向所述非锚点网络设备发送随机接入请求消息。采用上述方案，能够有效降低非锚点网络设备的静态能耗。

Description

随机接入方法及装置、计算机可读存储介质
本申请要求于2022年7月18日提交中国专利局、申请号为202210842867.6、发明名称为“随机接入方法及装置、计算机可读存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及无线通信技术领域，尤其涉及一种随机接入方法及装置、计算机可读存储介质。
背景技术
随着5G技术的进一步演进，提升网络能效成了当前热门的研究课题。网络设备能耗在网络能耗中占比较高，如何提高网络设备的能效是急需解决的问题。
在当前网络中，为了保证终端设备的用户体验，网络设备通常处于工作状态或者半睡眠状态，难以完全关闭或者进入深度睡眠模式。网络设备的能耗主要包括两个部分：静态功耗和动态功耗。静态功耗主要包括静态接收功耗以及静态发送功耗静态接收功耗主要包含网络在配置的随机接入资源上接收随机接入请求消息(Msg1)，静态发送功耗主要包括同步信号块的发送、寻呼消息的发送、系统信息的发送等。
现有技术中，网络设备的静态能耗较高。
发明内容
本发明实施例解决的是网络设备的静态能耗较高的技术问题。
为解决上述技术问题，本发明实施例提供一种随机接入方法，应用于终端设备，包括：检测到满足触发条件或接收到触发指示时，向非锚点网络设备发送指示信息；所述指示信息用于指示所述非锚点网络设备启动物理随机接入信道接收；向所述非锚点网络设备发送随机接入请求消息。
可选的，所述向非锚点网络设备发送指示信息，包括：向所述非锚点网络设备发送第一随机接入前导码，所述第一随机接入前导码承载所述指示信息。
可选的，所述向所述非锚点网络设备发送第一随机接入前导码，包括：采用非锚点载波上配置的第一随机接入时机，向所述非锚点网络设备发送所述第一随机接入前导码，所述第一随机接入时机为任意用于发送随机接入请求消息的随机接入时机。
可选的，在向所述非锚点网络设备发送第一随机接入前导码之前，还包括：获取所述锚点网络设备发送的系统消息；从所述系统消息中获取所述第一随机接入前导码的配置信息。
可选的，所述第一随机接入前导码的配置信息包括：所述第一随机接入前导码的索引范围；或者，所述第一随机接入前导码的索引号集合。所述第一随机接入前导码的配置信息包括：所述第一随机接入前导码的索引范围；或者，所述第一随机接入前导码的索引号集合。
可选的，所述获取所述锚点网络设备发送的系统消息，包括：在锚点载波上，接收所述锚点网络设备发送的系统消息。
可选的，所述向非锚点网络设备发送指示信息，包括：利用周期性上行资源，向所述非锚点网络设备发送所述指示信息；所述周期性上行资源由锚点网络设备为非锚点载波配置。
可选的，利用周期性上行资源，向所述非锚点网络设备发送所述指示信息之前，还包括：获取所述锚点网络设备发送的系统消息；从 所述系统消息中获取所述周期性上行资源的配置信息。
可选的，所述周期性上行资源的配置信息为第二随机接入时机的配置信息，所述第二随机接入时机用于发送所述指示信息，所述第二随机接入时机为部分用于发送随机接入请求消息的随机接入时机。
可选的，所述利用周期性上行资源，向所述非锚点网络设备发送所述指示信息，包括：利用所述第二随机接入时机发送第二随机接入前导码，所述指示信息承载于所述第二随机接入前导码，所述第二随机接入前导码为任意随机接入前导码。
可选的，所述触发条件包括：在锚点载波上连续N次随机接入失败。
可选的，所述接收到触发指示，包括：通过接收寻呼下行控制信息获取所述触发指示；或，通过接收寻呼提前指示获取所述触发指示；或，通过接收寻呼消息获取所述触发指示。
可选的，所述向所述非锚点网络设备发送随机接入请求消息，包括：采用用于发送随机接入请求消息的随机接入资源，发送所述随机接入请求消息。
可选的，所述发送随机接入请求消息，包括：在向所述非锚点网络设备发送指示信息后，推迟X个时间单元发送所述随机接入请求消息。
本发明实施例还提供了另一种随机接入方法，应用于非锚点网络设备，包括：接收到指示信息，启动物理随机接入信道接收；接收随机接入请求消息。
可选的，所述接收到指示信息，启动物理随机接入信道接收，包括：接收到第一随机接入前导码，启动物理随机接入信道接收；所述第一随机接入前导码承载所述指示信息。
可选的，所述第一随机接入前导码由终端设备在非锚点载波上配 置的第一随机接入时机发送，所述第一随机接入时机为任意用于发送随机接入请求消息的随机接入时机。
可选的，所述接收到指示信息，启动物理随机接入信道接收，包括：在周期性上行资源上接收所述指示信息，所述周期性上行资源由锚点网络设备为非锚点载波配置。
可选的，所述指示信息包括：随机接入前导码。
可选的，所述接收随机接入请求，包括：在用于接收随机接入请求消息的随机接入资源上，接收所述随机接入请求消息。
本发明实施例还提供了一种随机接入装置，应用于终端设备，包括：第一发送单元，用于检测到满足触发条件或接收到触发指示时，向非锚点网络设备发送指示信息；所述指示信息用于指示所述非锚点网络设备启动物理随机接入信道接收；第二发送单元，用于向所述非锚点网络设备发送随机接入请求消息。
本发明实施例还提供了另一种随机接入装置，应用于非锚点网络设备，包括：第一接收单元，用于接收到指示信息，启动物理随机接入信道接收；第二接收单元，用于接收随机接入请求消息。
本发明实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行上述任一种所述的随机接入方法的步骤。
本发明实施例还提供了另一种随机接入装置，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行上述任一种所述的随机接入方法的步骤。
与现有技术相比，本发明实施例的技术方案具有以下有益效果：
当检测到满足触发条件或接收到触发指示时，终端设备向非锚点 网络设备发送指示信息。非锚点网络设备在接收到指示信息之后，启动物理随机接入信道接收。之后，终端设备向非锚点网络设备发送随机接入请求消息，以接入非锚点网络设备。由于非锚点网络设备在接收到触发信息之后才启动物理随机接入信道接收，故可以有效降低非锚点网络设备的功耗。
附图说明
图1是本发明实施例中的一种随机接入方法的流程图；
图2是现有的一种通信场景示意图；
图3是本发明实施例中的另一种随机接入方法的流程图；
图4是本发明实施例中的一种随机接入装置的结构示意图；
图5是本发明实施例中的另一种随机接入装置的结构示意图。
具体实施方式
网络节能(network energy savings，network power saving)是移动运营商和设备商比较关心的问题。网络节能对降低运营成本和绿色环保都是很有好处的。在5G网络中，由于频谱资源较多，如1GHz、2GHz、4GHz、6GHz和26GHz等频带(band)，在网络负载较低时，一些频带(例如4GHz、6GHz或26GHz等)对应的载波(carrier)或小区(cell)可以尽量关闭，并按需打开，来达到网络节能的目的。
也就是说，网络负载较低时，一些载波或小区不需要承载数据。一般来说，通过某些载波的开关可以达到网络节能的目的，但这一般是需要在网络负载较低时才能实现。
对于能够按需开启的载波或小区，可以称为非锚点载波(non-anchor carrier)或非锚点小区(non-anchor cell)。相对地，不关闭的载波或小区可以称为锚点载波(anchor carrier)或锚点小区 (non-anchor cell)。通常来说，非锚点小区部署在锚点小区覆盖区域之内，锚点载波提供大范围的覆盖，而非锚点载波覆盖范围较小并提供高速数据传输服务，非锚点载波受网络控制的，可以按需打开的，如下图2所示。参照图2，给出了现有的一种通信场景示意图。图2中，锚点小区的覆盖范围内存在多个非锚点小区。
在现有的通信系统中，对于网络设备而言，需要在配置的RO(PRACH Ocassion)上不停的检测终端设备发送的随机接入请求消息(Msg1)，以保证能够及时地收到终端设备发送的随机接入请求消息(Msg1)。在网络负载较低的情况下，网络设备需在配置的RO上不停的检测终端设备发送的Msg1，导致网络设备的功耗较高。
在本发明实施例中，当检测到满足触发条件或接收到触发指示时，终端设备向非锚点网络设备发送指示信息。非锚点网络设备在接收到指示信息之后，启动物理随机接入信道接收。之后，终端设备向非锚点网络设备发送随机接入请求消息，以接入非锚点网络设备。由于非锚点网络设备在接收到指示信息之后才启动物理随机接入信道接收，故可以有效降低非锚点网络设备的功耗。
为使本发明的上述目的、特征和有益效果能够更为明显易懂，下面结合附图对本发明的具体实施例做详细的说明。
首先，对本申请实施例涉及的部分名词进行解释，以便于本领域技术人员理解。
1、终端设备。本发明实施例的终端设备是一种具有无线通信功能的设备，可以称为终端(terminal)、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)、接入终端设备、车载终端设备、工业控制终端设备、UE单元、UE站、移动站、远方站、远程终端设备、移动设备、UE终端设备、无线通信设备、UE代理或UE装置等。终端设备可以是固定的或者移动的。需要说明的是，终端设备可以支持至少一种无线通信技术，例如LTE、新空口(new radio，NR)等。例如，终端设备可以是手机(mobile phone)、 平板电脑(pad)、台式机、笔记本电脑、一体机、车载终端、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、可穿戴设备、未来移动通信网络中的终端设备或者未来演进的公共移动陆地网络(public land mobile network，PLMN)中的终端设备等。在本申请的一些实施例中，终端设备还可以是具有收发功能的装置，例如芯片系统。其中，芯片系统可以包括芯片，还可以包括其它分立器件。
2、网络设备。本发明实施例中，网络设备是一种为终端提供无线通信功能的设备，也可称之为无线接入网(radio access network，RAN)设备、或接入网网元等。其中，网络设备可以支持至少一种无线通信技术，例如LTE、NR等。示例的，网络设备包括但不限于：第五代移动通信系统(5th-generation，5G)中的下一代基站(generation nodeB，gNB)、演进型节点B(evolved node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(node B，NB)、基站控制器(base station controller，BSC)、基站接收台(base transceiver station，BTS)、家庭基站(例如，home evolved node B、或home node B，HNB)、基带单元(baseband unit，BBU)、接收点(transmitting and receiving point，TRP)、发射点(transmitting point，TP)、移动交换中心等。网络设备还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器、集中单元(centralized unit，CU)、和/或分布单元(distributed unit，DU)，或者网络设备可以为中继站、接入点、车载设备、终端设备、可穿戴设备以及未来移动通信中的接入网设备或 者未来演进的PLMN中的接入网设备等。在一些实施例中，网络设备还可以为具有为终端设备提供无线通信功能的装置，例如芯片系统。示例的，芯片系统可以包括芯片，还可以包括其它分立器件。
在一些实施例中，接入网设备还可以与互联网协议(Internet Protocol，IP)网络进行通信，例如因特网(internet)，私有的IP网，或其他数据网等。
本发明实施例提供了一种随机接入方法，参照图1，以下通过具体步骤进行详细说明。
在本发明实施例中，下述步骤101～步骤102对应的随机接入方法可以由终端设备中具有数据处理能力的芯片所执行，或者由终端设备中包括上述具有数据处理能力的芯片的芯片模组所执行。以下以终端设备为执行主体为例进行介绍。
步骤101，检测到满足触发条件或接收到触发指示时，向非锚点网络设备发送指示信息。
在本发明实施例中，指示信息可以用于指示非锚点网络设备启动物理随机接入信道(Physical Random Access Channel，PRACH)接收。
在具体实施中，非锚点网络设备可以为非锚点小区或非锚点载波对应的网络设备，锚点网络设备可以为锚点小区或锚点载波对应的网络设备。通常而言，锚点载波或者锚点小区可以提供大范围的覆盖，非锚点载波或者非锚点小区能够提供高速的数据传输，非锚点载波或者非锚点小区的覆盖区域通常小于非锚点载波或非锚点小区的覆盖范围。非锚点载波或者非锚点小区的覆盖区域，可以在锚点载波或者锚点小区的覆盖区域之内。
在本发明实施例中，终端设备满足触发条件，可以是指终端设备在锚点载波上连续N次随机接入失败，N≥2。也就是说，当终端设备在锚点载波上连续多次随机接入失败，则可以确定终端设备满足触发条件。终端设备在检测到满足触发条件后，即可向非锚点网络设备 发送指示信息。
在本发明实施例中，触发指示可以用于指示终端设备向非锚点网络设备发送指示信息。触发指示还可以用于指示终端设备通过非锚点载波进行随机接入。
在具体实施中，触发指示可以承载在寻呼消息中，终端设备在锚点载波上接收到承载触发指示的寻呼消息，即可确定接收到触发指示。终端设备在接收到触发指示后，也可以向非锚点网络设备发送指示信息。
在具体实施中，触发指示也可以承载在寻呼下行控制信息(Paging DCI)中。终端设备在锚点载波上接收到Paging DCI，从Paging DCI中获取触发指示。
具体地，在Paging DCI中，可以设置专用比特域，通过专用比特域的取值来表征触发指示，专用比特域的长度可以为1比特。
例如，终端设备接收到Paging DCI中，检测到Paging DCI中专用比特域的取值为1，则确定接收到触发指示。
在具体实施中，触发指示也可以承载在寻呼提前指示(Paging massage)中。终端设备在锚点载波上接收到Paging massage，从Paging massage中获取触发指示。
具体地，在Paging massage中，可以设置专用比特域，通过专用比特域的取值来表征触发指示，专用比特域的长度可以为1比特。
例如，终端设备接收到Paging massage中，检测到Paging massage中专用比特域的取值为1，则确定接收到触发指示。
可以理解的是，在上述实施例中，Paging DCI或Paging massage中专用比特域的长度也可以为2比特或者更多个比特。将专用比特域的长度设置为1比特，可以节省下行开销，提高资源利用效率。
相应地，表征存在触发指示的专用比特域的取值也可以为其他 值。例如，专用比特域的长度为1比特，则也可设定专用比特域的取值为0时，表征存在触发指示。
在具体实施中，终端设备向非锚点网络设备发送的指示信息，可以由第一随机接入前导码(preamble)所承载。换言之，终端设备向非锚点网络设备发送的指示信息，可以由第一随机接入前导码所表征。当非锚点网络设备接收到第一随机接入前导码时，即可确定接收到指示信息。
在本发明实施例中，第一随机接入前导码的个数可以为一个或多个。终端设备可以采用非锚点载波上配置的第一随机接入时机(RO)，向非锚点网络设备发送第一随机接入前导码。
在本发明实施例中，第一随机接入时机可以为任意用于发送随机接入请求消息的随机接入时机。也就是说，任意用于发送随机接入请求消息的随机接入时机，都可能会作为第一随机接入时机，承载指示信息并发送至非锚点网络设备。
在实际应用中可知，随机接入前导码可以用于随机接入。而在本发明实施例中，上述第一随机接入前导码承载有指示信息，可以仅用于指示非锚点网络设备启动PRACH。
在本发明实施例中，锚点网络设备(也即为锚点小区对应的网络设备)可以为终端设备配置一个或者多个第一随机接入前导码。锚点网络设备可以向终端设备发送系统消息，在系统消息中承载所配置的第一随机接入前导码的配置信息。锚点网络设备可以在锚点载波向终端设备发送系统消息。
终端设备可以在锚点载波上接收锚点网络设备发送的系统消息，从中获取锚点网络设备所配置的一个或多个第一随机接入前导码的配置信息。
在具体实施中，第一随机接入前导码的配置信息可以包括第一随机接入前导码的索引地址范围；或者，第一随机接入前导码的配置信 息可以包括第一随机接入前导码的索引号集合。
可见，第一随机接入前导码的配置信息，实质上可以用于指示哪些随机接入前导码为第一随机接入前导码。
例如，第一随机接入前导码的配置信息包括索引号集合{1，2}，则确定随机接入前导码1、随机接入前导码2为第一随机接入前导码。
在具体实施中，锚点网络设备可以从竞争随机接入前导码子集中选取第一随机接入前导码，也可以从非竞争随机接入前导码子集中选取第一随机接入前导码。
锚点网络设备可以随机从竞争随机接入前导码子集或非竞争随机接入前导码子集中选取第一随机接入前导码，也可以根据预设的选取规则从竞争随机接入前导码子集或非竞争随机接入前导码子集中选取第一随机接入前导码。
例如，锚点网络设备从竞争随机接入前导码子集中，随机选取2个随机接入前导码，分别为随机接入前导码1和随机接入前导码3，则随机接入前导码1与随机接入前导码3即为上述的第一随机接入前导码。
又如，锚点网络设备从非竞争随机接入前导码子集中，按照预设的规则选取2个随机接入前导码，分别为随机接入前导码2和随机接入前导码4，则随机接入前导码2与随机接入前导码4即为上述的第一随机接入前导码。
在具体实施中，终端设备也可以在周期性上行资源上，向非锚点网络设备发送指示信息。锚点网络设备可以为终端设备在非锚点载波配置周期性上行资源的配置信息，通过系统消息将非锚点载波上的周期性上行资源的配置信息发送给终端设备。锚点网络设备可以在锚点载波上，向终端设备发送系统消息。终端设备在锚点载波上接收系统消息，从而获取非锚点载波上的周期性上行资源的配置信息，进而确定周期性上行资源。
在本发明实施例中，非锚点载波上的周期性上行资源可以包括第二随机接入时机。此时，周期性上行资源的配置信息即为第二随机接入时机的配置信息。
第二随机接入时机用于发送指示信息，且第二随机接入时机为部分用于发送随机接入请求消息的随机接入时机。
可见，本发明实施例中的第一随机接入时机与第二随机接入时机并不相同。第一随机接入时机可以为任意用于发送随机接入请求消息的随机接入时机，而第二随机接入时机可以为部分用于发送随机接入请求消息的随机接入时机。
在本发明实施例中，指示信息可以承载于第二随机接入前导码，第二随机接入前导码可以为任意用于随机接入请求的随机接入前导码，或者承载于其他类型的序列。
在本发明实施例中，对于随机接入时机(RO)而言，RO的配置信息可以包括RO的周期、一个PRACH周期内时域上的RO个数、频率上复用的RO个数(msg1-FDM)，以及，RO关联的同步信号块(ssb-perRACH-occasion)等。
当终端设备检测到满足触发条件或接收到触发指示时，终端设备可以利用第二随机接入时机，向非锚点网络设备发送指示信息。非锚点网络设备在接收到第二随机接入时机承载的第二随机接入前导码后，则启动RACH接收。
综上可见，在本发明实施例中，指示信息可以由第一随机接入前导码承载。非锚点网络设备接收到第一随机接入前导码，则启动RACH接收。指示信息也可由第二随机接入时机上发送的第二随机接入前导码承载。非锚点网络设备接收到第二随机接入时机上发送的第二随机接入前导码，则启动RACH接收。
步骤102，向非锚点网络设备发送随机接入请求消息。
在具体实施中，终端设备在利用非锚点载波向非锚点网络设备发 送指示信息之后，可以利用非锚点载波上配置的用于发送随机接入请求消息的随机接入资源，发送随机接入请求消息(即Msg1)。
在本发明实施例中，用于发送随机接入请求消息的随机接入资源，可以包括用于发送随机接入请求的随机接入前导码以及随机接入时机。此处，用于发送随机接入请求消息的随机接入前导码可以与上述的第一接入前导码不同；用于发送随机接入请求的随机接入时机可以与上述的第二随机接入时机不同。
在本发明实施例中，终端设备在利用非锚点载波向非锚点网络设备发送指示信息之后，也可以延迟X个时间单元，再利用非锚点载波上配置的用于发送随机接入请求消息的RO发送Msg1。时间单元的单位可以为符号、时隙、ms等。X的取值可以由网络配置，或者为协议预先设定。
在具体实施中，非锚点网络设备在接收到指示信息之后，启动PRACH接收。非锚点网络设备启动RRACH接收可能需要一段时间，期间非锚点网络设备不会接收终端设备发送的随机接入请求消息。若终端设备在发送完指示信息之后，立即发送随机接入请求消息，则会导致终端设备发送的随机接入请求消息不被非锚点网络设备接收，造成功耗的浪费。
通过延迟X个时间单元发送随机接入请求消息，确保非锚点网络设备能够接收到终端设备发送的随机接入请求消息，避免终端设备功耗的浪费。
综上可见，在本发明实施例中，当检测到满足触发条件或接收到触发指示时，终端设备向非锚点网络设备发送指示信息。非锚点网络设备在接收到指示信息之后，启动物理随机接入信道接收。之后，终端设备向非锚点网络设备发送随机接入请求消息，以接入非锚点网络设备。
参照图3，给出了本发明实施例中的另一种随机接入方法，以下 通过具体步骤进行详细说明。
在本发明实施例中，下述步骤301～步骤302对应的随机接入方法可以由非锚点网络设备中具有数据处理能力的芯片所执行，或者由非锚点网络设备中包括上述具有数据处理能力的芯片的芯片模组所执行。以下以非锚点网络设备为执行主体为例进行介绍。
步骤301，接收到指示信息，启动物理随机接入信道接收。
在具体实施中，终端设备在检测到满足触发条件或接收到触发指示时，可以向非锚点网络设备发送指示信息。
在本发明实施例中，终端设备满足触发条件，可以是指终端设备在锚点载波上连续N次随机接入失败，N≥2。也就是说，当终端设备在锚点载波上连续多次随机接入失败，则可以确定终端设备满足触发条件。终端设备在检测到满足触发条件后，即可向非锚点网络设备发送指示信息。
在本发明实施例中，触发指示可以用于指示终端设备向非锚点网络设备发送指示信息。触发指示还可以用于指示终端设备通过非锚点载波进行随机接入。
在具体实施中，触发指示可以承载在寻呼消息中，终端设备在锚点载波上接收到承载触发指示的寻呼消息，即可确定接收到触发指示。终端设备在接收到触发指示后，也可以向非锚点网络设备发送指示信息。
在具体实施中，触发指示也可以承载在寻呼下行控制信息(Paging DCI)中。终端设备在锚点载波上接收到Paging DCI，从Paging DCI中获取触发指示。
具体地，在Paging DCI中，可以设置专用比特域，通过专用比特域的取值来表征触发指示，专用比特域的长度可以为1比特。
例如，终端设备接收到Paging DCI中，检测到Paging DCI中专 用比特域的取值为1，则确定接收到触发指示。
在具体实施中，触发指示也可以承载在寻呼提前指示(Paging massage)中。终端设备在锚点载波上接收到Paging massage，从Paging massage中获取触发指示。
具体地，在Paging massage中，可以设置专用比特域，通过专用比特域的取值来表征触发指示，专用比特域的长度可以为1比特。
例如，终端设备接收到Paging massage中，检测到Paging massage中专用比特域的取值为1，则确定接收到触发指示。
在具体实施中，终端设备向非锚点网络设备发送的指示信息，可以由第一随机接入前导码(preamble)承载。换言之，终端设备向非锚点网络发送的指示信息，可以由第一随机接入前导码所表征。当非锚点网络设备接收到第一随机接入前导码时，即可确定接收到指示信息。
第一随机接入前导码的个数可以为一个或多个。终端设备可以采用非锚点载波上配置的第一随机接入时机，向非锚点网络设备发送第一随机接入前导码。
在本发明实施例中，第一随机接入时机可以为任意用于发送随机接入请求消息的随机接入时机。也就是说，任意用于发送随机接入请求消息的随机接入时机，都可能会作为第一随机接入时机，承载指示信息并发送至非锚点网络设备。
在本发明实施例中，锚点网络设备(也即为锚点小区对应的网络设备)可以为终端设备配置一个或者多个第一随机接入前导码的配置信息。锚点网络设备可以向终端设备发送系统消息，在系统消息中承载所配置的第一随机接入前导码的配置信息。锚点网络设备可以在锚点载波向终端设备发送系统消息。
终端设备可以在锚点载波上接收锚点网络设备发送的系统消息，从中获取锚点网络设备所配置的一个或多个第一随机接入前导码的 配置信息。
在具体实施中，第一随机接入前导码的配置信息可以包括第一随机接入前导码的索引地址范围；或者，第一随机接入前导码的配置信息可以包括第一随机接入前导码的索引号集合。
可见，第一随机接入前导码的配置信息，实质上可以用于指示哪些随机接入前导码为第一随机接入前导码。
例如，第一随机接入前导码的配置信息包括索引号集合{1，2}，则确定随机接入前导码1、随机接入前导码2为第一随机接入前导码。
在具体实施中，锚点网络设备可以从竞争随机接入前导码子集中选取第一随机接入前导码，也可以从非竞争随机接入前导码子集中选取第一随机接入前导码。
锚点网络设备可以随机从竞争随机接入前导码子集或非竞争随机接入前导码子集中选取第一随机接入前导码，也可以根据预设的选取规则从竞争随机接入前导码子集或非竞争随机接入前导码子集中选取第一随机接入前导码。
例如，锚点网络设备从竞争随机接入前导码子集中，随机选取2个随机接入前导码，分别为随机接入前导码1和随机接入前导码3，则随机接入前导码1与随机接入前导码3即为上述的第一随机接入前导码。
又如，锚点网络设备从非竞争随机接入前导码子集中，按照预设的规则选取2个随机接入前导码，分别为随机接入前导码2和随机接入前导码4，则随机接入前导码2与随机接入前导码4即为上述的第一随机接入前导码。
在具体实施中，终端设备也可以在周期性上行资源上，向非锚点网络设备发送指示信息。锚点网络设备可以为终端设备在非锚点载波配置周期性上行资源的配置信息，通过系统消息将非锚点载波上的周期性上行资源的配置信息发送给终端设备。锚点网络设备可以在锚点 载波上，向终端设备发送系统消息。终端设备在锚点载波上接收系统消息，从而获取非锚点载波上的周期性上行资源的配置信息，进而确定周期性上行资源。
在本发明实施例中，非锚点载波上的周期性上行资源可以包括第二随机接入时机。此时，周期性上行资源的配置信息即为第二RO的配置信息。
第二随机接入时机用于发送指示信息，且第二随机接入时机为部分用于发送随机接入请求消息的随机接入时机。
可见，本发明实施例中的第一随机接入时机与第二随机接入时机并不相同。第一随机接入时机可以为任意用于发送随机接入请求消息的随机接入时机，而第二随机接入时机可以为部分用于发送随机接入请求消息的随机接入时机。
在本发明实施例中，指示信息可以承载于第二随机接入前导码，第二随机接入前导码可以为任意用于随机接入请求的随机接入前导码，或者承载于其他类型的序列。
在本发明实施例中，对于随机接入时机(RO)而言，RO的配置信息可以包括RO的周期、一个PRACH周期内时域上的RO个数、频率上复用的RO个数(msg1-FDM)，以及，RO关联的同步信号块(ssb-perRACH-occasion)等。
当终端设备检测到满足触发条件或者接收到触发指示时，终端设备可以利用第二随机接入时机，向非锚点网络设备发送指示信息。非锚点网络设备在接收到第二随机接入时机承载的第二随机接入前导码后，则可以启动PRACH接收。
换言之，指示信息实质上是由第二随机接入时机表征。具体而言，第二接入时机为RO1以及RO2，非锚点网络设备检测到传输随机接入前导码的接入时机包括RO1以及RO2，则确定接收到指示信息，启动PRACH接收。
也就是说，如果终端设备在RO1以及RO2上报了随机接入前导码，意味着终端设备向非锚点网络设备发送了指示信息。
步骤302，接收随机接入请求消息。
在具体实施中，终端设备在利用非锚点载波向非锚点网络设备发送指示信息之后，可以利用非锚点载波上配置的用于发送随机接入请求消息的随机接入资源，发送随机接入请求消息(即Msg1)。
在本发明实施例中，用于发送随机接入请求消息的随机接入资源，可以包括用于发送随机接入请求的随机接入前导码以及随机接入时机。此处，用于发送随机接入请求消息的随机接入前导码可以与上述的第一接入前导码不同；用于发送随机接入请求的随机接入时机可以与上述的第二随机接入时机不同。
在本发明实施例中，终端设备在利用非锚点载波向非锚点网络设备发送指示信息之后，也可以延迟X个时间单元，再利用非锚点载波上配置的用于发送随机接入请求消息的RO发送Msg1。时间单元的单位可以为符号、时隙、ms等。X的取值可以由网络配置，或者为协议预先设定。
在具体实施中，非锚点网络设备在接收到指示信息之后，启动PRACH接收。非锚点网络设备启动RRACH接收可能需要一段时间，期间非锚点网络设备不会接收终端设备发送的随机接入请求消息。若终端设备在发送完指示信息之后，立即发送随机接入请求消息，则会导致终端设备发送的随机接入请求消息不被网络设备接收，造成功耗的浪费。
而在本发明实施例中，通过延迟X个时间单元发送随机接入请求消息，确保非锚点网络设备能够接收到终端设备发送的随机接入请求消息，避免终端设备功耗的浪费。
参照图4，给出了本发明实施例中的一种随机接入装置40，包括：第一发送单元401以及第二发送单元402，其中：
第一发送单元401，用于检测到满足触发条件或者接收到触发指示时，向非锚点网络设备发送指示信息；所述指示信息用于指示所述非锚点网络设备启动物理随机接入信道接收；
第二发送单元402，用于向所述非锚点网络设备发送随机接入请求消息。
在具体实施中，上述第一发送单元401以及第二发送单元402的具体执行过程可以对应参照步骤101～步骤102，此处不做赘述。
在具体实施中，上述的随机接入装置40可以对应于终端设备中具有数据处理功能的芯片；或者对应于终端设备中包括具有数据处理功能的芯片的芯片模组，或者对应于终端设备。
参照图5，给出了本发明实施例中的另一种随机接入装置50，包括：第一接收单元501以及第二接收单元502，其中：
第一接收单元501，用于接收到指示信息，启动物理随机接入信道接收；
第二接收单元502，用于接收随机接入请求消息。
在具体实施中，上述第一接收单元501以及第二接收单元502的具体执行过程可以对应参照步骤301～步骤302，此处不做赘述。
在具体实施中，上述的随机接入装置50可以对应于网络设备中具有数据处理功能的芯片；或者对应于网络设备中包括具有数据处理功能的芯片的芯片模组，或者对应于网络设备。
在具体实施中，关于上述实施例中描述的各个装置、产品包含的各个模块/单元，其可以是软件模块/单元，也可以是硬件模块/单元，或者也可以部分是软件模块/单元，部分是硬件模块/单元。
例如，对于应用于或集成于芯片的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片内部 集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于芯片模组的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于芯片模组的同一组件(例如芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于芯片模组内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现；对于应用于或集成于终端的各个装置、产品，其包含的各个模块/单元可以都采用电路等硬件的方式实现，不同的模块/单元可以位于终端内同一组件(例如，芯片、电路模块等)或者不同组件中，或者，至少部分模块/单元可以采用软件程序的方式实现，该软件程序运行于终端内部集成的处理器，剩余的(如果有)部分模块/单元可以采用电路等硬件方式实现。
本发明实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，所述计算机程序被处理器运行时执行步骤101～步骤102所提供的随机接入方法的步骤，或者执行步骤301～步骤302所提供的随机接入方法的步骤。
本发明实施例还提供了一种随机接入装置，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，所述处理器运行所述计算机程序时执行步骤101～步骤102所提供的随机接入方法的步骤，或者执行步骤301～步骤302所提供的随机接入方法的步骤。
本领域普通技术人员可以理解上述实施例的各种方法中的全部或部分步骤是可以通过程序来指示相关的硬件来完成，该程序可以存储于一计算机可读存储介质中，存储介质可以包括：ROM、RAM、磁盘或光盘等。
虽然本发明披露如上，但本发明并非限定于此。任何本领域技术人员，在不脱离本发明的精神和范围内，均可作各种更动与修改，因 此本发明的保护范围应当以权利要求所限定的范围为准。

Claims (24)

  1. 一种随机接入方法，应用于终端设备，其特征在于，包括：
    检测到满足触发条件或者接收到触发指示时，向非锚点网络设备发送指示信息；所述指示信息用于指示所述非锚点网络设备启动物理随机接入信道接收；
    向所述非锚点网络设备发送随机接入请求消息。
  2. 如权利要求1所述的随机接入方法，其特征在于，所述向非锚点网络设备发送指示信息，包括：
    向所述非锚点网络设备发送第一随机接入前导码，所述第一随机接入前导码承载所述指示信息。
  3. 如权利要求2所述的随机接入方法，其特征在于，所述向所述非锚点网络设备发送第一随机接入前导码，包括：
    采用非锚点载波上配置的第一随机接入时机，向所述非锚点网络设备发送所述第一随机接入前导码，所述第一随机接入时机为任意用于发送随机接入请求消息的随机接入时机。
  4. 如权利要求2所述的随机接入方法，其特征在于，在向所述非锚点网络设备发送第一随机接入前导码之前，还包括：
    获取所述锚点网络设备发送的系统消息；
    从所述系统消息中获取所述第一随机接入前导码的配置信息。
  5. 如权利要求4所述的随机接入方法，其特征在于，所述第一随机接入前导码的配置信息包括：所述第一随机接入前导码的索引范围；或者，所述第一随机接入前导码的索引号集合。
  6. 如权利要求4所述的随机接入方法，其特征在于，所述获取所述锚点网络设备发送的系统消息，包括：
    在锚点载波上，接收所述锚点网络设备发送的系统消息。
  7. 如权利要求1所述的随机接入方法，其特征在于，所述向非锚点网络设备发送指示信息，包括：
    利用周期性上行资源，向所述非锚点网络设备发送所述指示信息；所述周期性上行资源由锚点网络设备为非锚点载波配置。
  8. 如权利要求7所述的随机接入方法，其特征在于，利用周期性上行资源，向所述非锚点网络设备发送所述指示信息之前，还包括：
    获取所述锚点网络设备发送的系统消息；
    从所述系统消息中获取所述周期性上行资源的配置信息。
  9. 如权利要求8所述的随机接入方法，其特征在于，
    所述周期性上行资源的配置信息为第二随机接入时机的配置信息，所述第二随机接入时机用于发送所述指示信息，所述第二随机接入时机为部分用于发送随机接入请求消息的随机接入时机。
  10. 如权利要求9所述的随机接入方法，其特征在于，所述利用周期性上行资源，向所述非锚点网络设备发送所述指示信息，包括：
    利用所述第二随机接入时机发送第二随机接入前导码，所述指示信息承载于所述第二随机接入前导码，所述第二随机接入前导码为任意随机接入前导码。
  11. 如权利要求1所述的随机接入方法，其特征在于，所述触发条件包括：
    在锚点载波上连续N次随机接入失败。
  12. 如权利要求1所述的随机接入方法，其特征在于，所述接收到触发指示，包括：
    通过接收寻呼下行控制信息获取所述触发指示；或，
    通过接收寻呼提前指示获取所述触发指示；
    或，通过接收寻呼消息获取所述触发指示。
  13. 如权利要求1所述的随机接入方法，其特征在于，所述向所述非锚点网络设备发送随机接入请求消息，包括：
    采用用于发送随机接入请求消息的随机接入资源，发送所述随机接入请求消息。
  14. 如权利要求13所述的随机接入方法，其特征在于，所述发送随机接入请求消息，包括：
    在向所述非锚点网络设备发送指示信息后，推迟X个时间单元发送所述随机接入请求消息。
  15. 一种随机接入方法，应用于非锚点网络设备，其特征在于，包括：接收到指示信息，启动物理随机接入信道接收；
    接收随机接入请求消息。
  16. 如权利要求15所述的随机接入方法，其特征在于，所述接收到指示信息，启动物理随机接入信道接收，包括：
    接收到第一随机接入前导码，启动物理随机接入信道接收；所述第一随机接入前导码承载所述指示信息。
  17. 如权利要求16所述的随机接入方法，其特征在于，所述第一随机接入前导码由终端设备在非锚点载波上配置的第一随机接入时机发送，所述第一随机接入时机为任意用于发送随机接入请求消息的随机接入时机。
  18. 如权利要求15所述的随机接入方法，其特征在于，所述接收到指示信息，启动物理随机接入信道接收，包括：
    在周期性上行资源上接收所述指示信息，所述周期性上行资源由锚点网络设备为非锚点载波配置。
  19. 如权利要求18所述的随机接入方法，其特征在于，所述指示信息包括：随机接入前导码。
  20. 如权利要求15所述的随机接入方法，其特征在于，所述接收随机接入请求，包括：
    在用于接收随机接入请求消息的随机接入资源上，接收所述随机接入请求消息。
  21. 一种随机接入装置，应用于终端设备，其特征在于，包括：
    第一发送单元，用于检测到满足触发条件或者接收到触发指示时，向非锚点网络设备发送指示信息；所述指示信息用于指示所述非锚点网络设备启动物理随机接入信道接收；
    第二发送单元，用于向所述非锚点网络设备发送随机接入请求消息。
  22. 一种随机接入装置，应用与非锚点网络设备，其特征在于，包括：
    第一接收单元，用于接收到指示信息，启动物理随机接入信道接收；
    第二接收单元，用于接收随机接入请求消息。
  23. 一种计算机可读存储介质，所述计算机可读存储介质为非易失性存储介质或非瞬态存储介质，其上存储有计算机程序，其特征在于，所述计算机程序被处理器运行时执行权利要求1～20任一项所述的随机接入方法的步骤。
  24. 一种随机接入装置，包括存储器和处理器，所述存储器上存储有可在所述处理器上运行的计算机程序，其特征在于，所述处理器运行所述计算机程序时执行权利要求1～14任一项所述的随机接入方法的步骤；或者，执行权利要求15～20任一项所述的随机接入方法的步骤。
PCT/CN2023/107429 2022-07-18 2023-07-14 随机接入方法及装置、计算机可读存储介质 WO2024017159A1 (zh)

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